# Robert Thacker vs. Bobby Fischer

Puzzle from a simul, *Thacker vs Robert Fischer*, USA, 1957 – a beautiful example of underpromotion.

Black to move and mate in 2.

Roll over to see the solution: `...1.dxe1=N 2.Kg1 Qg2#`

FEN: `2r2r2/6kp/3p4/3P4/4Pp2/5P1P/PP1pq1P1/4R2K b - - 0 1`

### About the players

**Robert James "Bobby" Fischer** (1943-2008) was an American chess Grandmaster and World Chess Champion. He became the US Chess Champion at 14, and at 15 he became the youngest Grandmaster. He also made many contributions to chess, including the modified timing system that adds a bonus after each move.

1. Rc8-c1 Re1-g1

2. d2-d1=Q Rg1xd1

3. Rc1xd1 Kh1-h2

4. Qe2-f1 b2-b4

5. Qf1-h1#

Thus?

1. d2xe1=N Kh1-g1

2. Qe2xg2

Riiiiiiight

This nor the Fischer knew. Look at his game so you can see what he did.

Qe2xe1# Kh1-h2

d2-d1=Q b2-b4

Qe1-g1++

boris mad face

1. d2xe1=N Kh1-g1

2. Qe2xg2

1.Qe1

2. Kh2

3.Qg3

4.Re1

**4.**Rc1

1…dxe1=N 2. Kg1 Qxg2#

1. d2xe1=N

2. Kh1-g1 Qe2xg2#

but this is best way

Rc8-c1

2. Re1xc1 d2xc1=Q+

3. Kh1-h2 Qe2-f1

4. b2-b4 Qf1-h1#

took a bit more moves